patzefran

Sorry, you are wrong, It is a well known tidal wave (Mascaret !) going up the Gironde river against the current ! This occure somtimes...

https://www.facebook.com/watch/?v=4250260908606024

Do you see any sign of turbulence in the Mascaret video ?

https://fr.wikipedia.org/wiki/Soliton

https://www.sudouest.fr/gironde/langon/la-vague-du-mascaret-va-une-nouvelle-fois-remonter-la-garonne-ce-week-end-30592901.php

This exist already in nature ! Every years hundreds of surfer and canoeist use the "mascaret" on the Dordogne river (France) to go up...